Kinahan — On Granite and Metamorphic Rocks. 221 



the same time there are facilities for working a quarry for an export 

 trade in various places where there is water-power at hand, and 

 accommodation for easy and cheap shipment. 



In diiferent places in the vicinity of Galway, north-east of 

 Barna House, and elsewhere in the tract north of Galway Bay, 

 felsite-rock [felsitic granite) and felsites have been recorded (g. s. m.). 

 All these rocks are more or less similar to the granulyte at present 

 in use in the glass trade {ante, Introduction, page 179). Leptinyte, 

 or hornstone, and very pure felstones occur in places in the neigh- 

 bourhood of Galway, which seem capable of beiDg manufactured 

 into kaolin, while especial attention may be directed to the nume- 

 rous compact pure f elstone dykes in the country immediately south- 

 west of Roundstone, all of which might be similarly used ; some 

 of course being more pure than others. 



In Western Mayo, at Corvockbrack and Cregganbaun, to the 

 south-east of Louisburgh, in the Silurians, there is a considerable 

 intrude and veins of granites and elvans ; white, shaded- white, 

 various shades of grey, salmon-colour, and light-pink ; all being 

 capable of a good polish, and some would be very effective when 

 polished; they rise in fair-sized well- shaped blocks. The locality, 

 however, is very inaccessible ; the roads to it being of the worst 

 description of mountain paths ; it also wants a seaport. 



Termon Hill, at the south extremity of the Mullet, and north 

 of the entrance into Black Sod Bay, is a mass of granite. This has 

 been quarried at the coast in the vicinity of Termon at Fishery- 

 quay. The quarries have lately been taken by The Mayo Granite 

 Company, who are now preparing to supply, in polished work, 

 columns with plinths and moulded bases, pilasters, steps, &c. ; and, 

 in dressed work, kerbings, crossings, paving-setts, quoins, sills, and 

 any other required stones ; colours of silvery-grey, salmon, and 

 red shades. In the Beaufort, or S. W. Quarry, the stones are 

 silvery-grey and pink ; in the Upper Quarry, grey and red ; and in 

 the Lower Quarry, pink and salmon- colour. The stones that have 

 been worked are very even-grained, the felspar and quartz predo- 

 minating, while the mica is in small scales. Mr. Davies writes of 

 this stone, " The grains of quartz, felspar, and mica are fine, and 

 so well-cemented and compacted together that the stone is capable 

 of a very high polish, while they are sufficiently large and distinct 

 to afford a pleasing variety of colour." ( W. Davies.) The rocks are 



